package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;


import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;


    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //1.处理各种业务异常  （地址簿为空，购物车为空则无法下单）
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        AddressBook addressBook = addressBookMapper.getById(addressBookId);
        if (addressBook == null) {
            throw new OrderBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //校验用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDistrictName());


        //查询当前购物车的数据
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new OrderBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //2.向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setUserId(BaseContext.getCurrentId());
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress(addressBook.getDistrictName() + addressBook.getDetail());
        orders.setRemark(ordersSubmitDTO.getRemark());
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        //3.向订单明细表插入n条数据
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail(); //订单明细
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //4.清空购物车数据
        shoppingCartMapper.delete(BaseContext.getCurrentId());

        //5.构造vo对象
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderAmount(orders.getAmount())
                .orderNumber(orders.getNumber())
                .orderTime(orders.getOrderTime())
                .build();
        return orderSubmitVO;
    }


    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
//        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);
//
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
//
//        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//        vo.setPackageStr(jsonObject.getString("package"));
        String timeStamp = String.valueOf(LocalDateTime.now());
        OrderPaymentVO vo = OrderPaymentVO.builder()
                .nonceStr("2518347523197776505697361495366326")
                .paySign("ZN88HEECHXJ2yDfv+pXF45/OPgkasJwadawfaw4545/AWWssfas4aw5f4A")
                .timeStamp(timeStamp)
                .signType("RSA")
                .packageStr("prepay id=wx06596565asfas60a6sf5655a00000")
                .build();
        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param orderNumber
     */
    public void paySuccess(String orderNumber) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(orderNumber);
//        Orders ordersDB = ordersList.get(0);
        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息 type orderId content
        Map map = new HashMap();
        map.put("type",1); // 1表示来单提醒 2表示客户催单
        map.put("orderId",ordersDB.getId()); //获得订单id
        map.put("content","订单号" + orderNumber);

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);

    }

    /**
     * 历史订单查询
     *
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    public PageResult getHitsoryOrders(int pageNum, int pageSize, Integer status) {
        //设置分页参数
        PageHelper.startPage(pageNum, pageSize);

        //构造分页查询对象
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        Page<Orders> ordersPage = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList<>();

        if (ordersPage != null && ordersPage.getTotal() > 0) {
            for (Orders orders : ordersPage) {
                Long orderId = orders.getId();

                //根据Orderid查询订单详情
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                list.add(orderVO);
            }
        }
        return new PageResult(ordersPage.getTotal(), list);
    }

    /**
     * 根据订单id查询订单详情
     *
     * @param id
     * @return
     */
    public OrderVO getOrderDetail(Long id) {
        Orders order = orderMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 用户取消订单
     *
     * @param id
     */
    public void userCancelById(Long id) {
        /**
         * - 待支付和待接单状态下，用户可直接取消订单
         * - 商家已接单状态下，用户取消订单需电话沟通商家
         * - 派送中状态下，用户取消订单需电话沟通商家
         * - 如果在待接单状态下取消订单，需要给用户退款
         * - 取消订单后需要将订单状态修改为“已取消”
         */
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消订单");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    /**
     * 再来一单
     *
     * @param id
     */
    public void repetiton(Long id) {
        //再来一单就是将原订单中的商品重新加入到购物车中
        Long userId = BaseContext.getCurrentId();
        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);


        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();
            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 条件查询订单
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        // orders  orderDeatil
        //设置分页条件
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        //开始分页查询
        Page<Orders> ordersPage = orderMapper.pageQuery(ordersPageQueryDTO);

        List<Orders> ordersList = ordersPage.getResult();
        List<OrderVO> orderVOList = new ArrayList<>();

        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        if (ordersPage != null && ordersPage.size() > 0) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);

                //从orders中获得菜品数据
                Long ordersId = orders.getId();
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(ordersId);

                List<String> orderDishList = new ArrayList<>();
                // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
                for (OrderDetail orderDetail : orderDetailList) {
                    String orderDish = orderDetail.getName() + '*' + orderDetail.getNumber();
                    orderDishList.add(orderDish);
                }

                String orderDishString = orderDishList.toString();
                orderVO.setOrderDishes(orderDishString);
                orderVOList.add(orderVO);
            }

        }
        return new PageResult(ordersPage.getTotal(), orderVOList);
    }

    /**
     * 各状态订单数量统计
     *
     * @return
     */
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();

        Integer confirmed = orderMapper.select(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.select(Orders.DELIVERY_IN_PROGRESS);
        Integer toBeConfirmed = orderMapper.select(Orders.TO_BE_CONFIRMED);

        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        return orderStatisticsVO;
    }

    /**
     * 查询订单详情
     *
     * @param orderId
     * @return
     */
    public OrderVO getDetails(Long orderId) {
        //根据orderId 查询订单信息
        Orders order = orderMapper.getById(orderId);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order, orderVO);

        //根据orderID查询菜品详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 商家接单
     *
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .status(Orders.CONFIRMED)
                .id(ordersConfirmDTO.getId())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 拒单
     *
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        //根据ID查询订单
        Orders orderDB = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (orderDB == null || !orderDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders order = new Orders();
        //退款且修改支付状态
        Integer payStatus = order.getPayStatus();
        if (payStatus == Orders.PAID) {
            order.setPayStatus(Orders.REFUND);
            log.info("退款");
        }
        order.setId(orderDB.getId());
        order.setStatus(Orders.CANCELLED);
        order.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        order.setCancelReason(ordersRejectionDTO.getRejectionReason());
        order.setCancelTime(LocalDateTime.now());

        orderMapper.update(order);

    }

    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        Orders orderDB = orderMapper.getById(ordersCancelDTO.getId());
        /**
         * - 取消订单其实就是将订单状态修改为“已取消”
         * - 商家取消订单时需要指定取消原因
         * - 商家取消订单时，如果用户已经完成了支付，需要为用户退款
         */
        if (orderDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders order = new Orders();
        if (orderDB.getStatus() == Orders.PAID) {
            order.setPayStatus(Orders.REFUND);
            log.info("已支付，需退款");
        }

        order.setId(ordersCancelDTO.getId());
        order.setStatus(Orders.CANCELLED);
        order.setCancelReason(ordersCancelDTO.getCancelReason());
        order.setCancelTime(LocalDateTime.now());

        orderMapper.update(order);

    }

    /**
     * 派送订单
     *
     * @param id
     */

    public void delivery(Long id) {

        /**
         * - 派送订单其实就是将订单状态修改为“派送中”
         * - 只有状态为“待派送”的订单可以执行派送订单操作
         */
        Orders orderDB = orderMapper.getById(id);
        if (orderDB == null || !orderDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders order = new Orders();
        order.setId(orderDB.getId());
        order.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(order);
    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(Long id) {
        Orders orderDB = orderMapper.getById(id);
        /**
         * - 完成订单其实就是将订单状态修改为“已完成”
         * - 只有状态为“派送中”的订单可以执行订单完成操作
         */
        if (orderDB==null || !orderDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders order = new Orders();
        order.setId(orderDB.getId());
        order.setStatus(Orders.COMPLETED);
        order.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(order);
    }

    /**
     *客户催单
     * @param id
     */
    public void reminder(Long id) {
        //根据ID查询订单
        Orders orderDB = orderMapper.getById(id);

        //校验订单是否存在
        if (orderDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号："+orderDB.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }


    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 100000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}